Let me first review my uploading practice ~

the way to upload multiple merchandise videos is
use onchange to confirm input file

<input multiple type="file" id="file1" name="icons[]" class="" accept="image/jpeg, image/png, image/jpg">

then use FileReader to create preview and base64 addresses
. The back end uses foreach to fetch all the base64 of $_ POST ["icon"] and download it to the server using file_put_contents

foreach ($_POST["icon"] as $key => $value) {

      preg_match("/^(data:\s*image\/(\w+);base64,)/", $value, $result);

the reused corresponding network address is translated into a href= "https://host/images/xxxx/%E6%AF%8F%E5%80%8B%E5%9C%96%E7%89%87%E5%90%8D%E7%A8%B1.xxx" rel=" nofollow noreferrer "> https://host/images/xxxx/ each.
then transfer the chip path information above the second page to the icon number table. The
bits are product_id and icon

the question now is:
do you want to modify the patch by default? The first question of
is the question shown. Entering a video to show that he currently has two slices
the second question is how to propose a modification?
how to skip the third unmodified film? Since the value value is attached to the input file algorithm (security issues), how do I know which activities are performed at the back end?

charge

in front of the merchandise is ID
followed by a different icon address